What Happened?

Cessair Aven couldn't ask for anything more. She already has a stable career as a financial advisor at a successful bank in the city and the everlasting love that she has been wishing for a long time with her boyfriend, Lucas Alber. In celebration of being 3 years together with her boyfriend, Cessair and Lucas decided to spend an unforgettable week together in a whirlwind of adventure and passion. It is clear as day that they have burning feelings for each other that desire for them to stay with each other forever. One night, they both drift off to sleep feeling as if nothing could possibly go wrong. The next day, he's nowhere to be found. He can't be located or reached for any reason. She is devastated and must begin the process of mendling her life again. After seven years, he reappears. What happened?

(Photo is not mine. Credits to the owner.)